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ROBChain

PoC exploit for Super Smash Brothers Wii U to get arbitrary ROP execution under userland

Can go over any fighter (and possibly article) to gain arbitrary code execution (Only ROP atm). This is a variation of contenthax based around MSC (the main character scripting language) exploiting a heap overflow to gain arbitrary read/write within the MSC script. Use pymsc to build.

Build PoC

Required:

  • Python 3.6 or greater in path as python3 (Edit Makefile for other configs)
  • make
git clone --recurse-submodules https://github.com/jam1garner/ROBChain.git && \
cd ROBChain/poc && \
make clean && make

Install

Take the generated exploit.mscsb and install it in a patch over

/data/fighter/[fighter]/script/msc/[fighter].mscsb

then install via SDCafiine or fs contents replacement.

Video of PoC

https://youtu.be/u3qKsbGPgn0

Write up

https://github.com/jam1garner/ROBChain/blob/master/WRITE-UP.md